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source: github/program/include/rcube_output_html.php @ 1aceb9c

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HEADcourier-fixdev-browser-capabilitiespdo

Last change on this file since 1aceb9c was 1aceb9c, checked in by alecpl <alec@…>, 13 months ago
Framework refactoring (I hope it's the last one): rcube,rcmail,rcube_ui -> rcube,rcmail,rcube_utils renamed main.inc into rcube_bc.inc
Property mode set to `100644`
File size: 54.5 KB

Line
1	<?php
2
3	/*
4	+-----------------------------------------------------------------------+
5	\| program/include/rcubeoutput_html.php \|
6	\| \|
7	\| This file is part of the Roundcube Webmail client \|
8	\| Copyright (C) 2006-2012, The Roundcube Dev Team \|
9	\| \|
10	\| Licensed under the GNU General Public License version 3 or \|
11	\| any later version with exceptions for skins & plugins. \|
12	\| See the README file for a full license statement. \|
13	\| \|
14	\| PURPOSE: \|
15	\| Class to handle HTML page output using a skin template. \|
16	\| \|
17	+-----------------------------------------------------------------------+
18	\| Author: Thomas Bruederli <roundcube@gmail.com> \|
19	+-----------------------------------------------------------------------+
20
21	$Id$
22
23	*/
24
25
26	/**
27	* Class to create HTML page output using a skin template
28	*
29	* @package View
30	*/
31	class rcube_output_html extends rcube_output
32	{
33	public $type = 'html';
34
35	protected $message = null;
36	protected $js_env = array();
37	protected $js_labels = array();
38	protected $js_commands = array();
39	protected $plugin_skin_path;
40	protected $template_name;
41	protected $scripts_path = '';
42	protected $script_files = array();
43	protected $css_files = array();
44	protected $scripts = array();
45	protected $default_template = "<html>\n<head><title></title></head>\n<body></body>\n</html>";
46	protected $header = '';
47	protected $footer = '';
48	protected $body = '';
49	protected $base_path = '';
50
51	// deprecated names of templates used before 0.5
52	protected $deprecated_templates = array(
53	'contact' => 'showcontact',
54	'contactadd' => 'addcontact',
55	'contactedit' => 'editcontact',
56	'identityedit' => 'editidentity',
57	'messageprint' => 'printmessage',
58	);
59
60	/**
61	* Constructor
62	*
63	* @todo Replace $this->config with the real rcube_config object
64	*/
65	public function __construct($task = null, $framed = false)
66	{
67	parent::__construct();
68
69	//$this->framed = $framed;
70	$this->set_env('task', $task);
71	$this->set_env('x_frame_options', $this->config->get('x_frame_options', 'sameorigin'));
72
73	// load the correct skin (in case user-defined)
74	$this->set_skin($this->config->get('skin'));
75
76	// add common javascripts
77	$this->add_script('var '.rcmail::JS_OBJECT_NAME.' = new rcube_webmail();', 'head_top');
78
79	// don't wait for page onload. Call init at the bottom of the page (delayed)
80	$this->add_script(rcmail::JS_OBJECT_NAME.'.init();', 'docready');
81
82	$this->scripts_path = 'program/js/';
83	$this->include_script('jquery.min.js');
84	$this->include_script('common.js');
85	$this->include_script('app.js');
86
87	// register common UI objects
88	$this->add_handlers(array(
89	'loginform' => array($this, 'login_form'),
90	'preloader' => array($this, 'preloader'),
91	'username' => array($this, 'current_username'),
92	'message' => array($this, 'message_container'),
93	'charsetselector' => array($this, 'charset_selector'),
94	'aboutcontent' => array($this, 'about_content'),
95	));
96	}
97
98
99	/**
100	* Set environment variable
101	*
102	* @param string Property name
103	* @param mixed Property value
104	* @param boolean True if this property should be added to client environment
105	*/
106	public function set_env($name, $value, $addtojs = true)
107	{
108	$this->env[$name] = $value;
109	if ($addtojs \|\| isset($this->js_env[$name])) {
110	$this->js_env[$name] = $value;
111	}
112	}
113
114
115	/**
116	* Getter for the current page title
117	*
118	* @return string The page title
119	*/
120	protected function get_pagetitle()
121	{
122	if (!empty($this->pagetitle)) {
123	$title = $this->pagetitle;
124	}
125	else if ($this->env['task'] == 'login') {
126	$title = $this->app->gettext(array(
127	'name' => 'welcome',
128	'vars' => array('product' => $this->config->get('product_name')
129	)));
130	}
131	else {
132	$title = ucfirst($this->env['task']);
133	}
134
135	return $title;
136	}
137
138
139	/**
140	* Set skin
141	*/
142	public function set_skin($skin)
143	{
144	$valid = false;
145
146	if (!empty($skin) && is_dir('skins/'.$skin) && is_readable('skins/'.$skin)) {
147	$skin_path = 'skins/'.$skin;
148	$valid = true;
149	}
150	else {
151	$skin_path = $this->config->get('skin_path');
152	if (!$skin_path) {
153	$skin_path = 'skins/default';
154	}
155	$valid = !$skin;
156	}
157
158	$this->config->set('skin_path', $skin_path);
159
160	return $valid;
161	}
162
163
164	/**
165	* Check if a specific template exists
166	*
167	* @param string Template name
168	* @return boolean True if template exists
169	*/
170	public function template_exists($name)
171	{
172	$filename = $this->config->get('skin_path') . '/templates/' . $name . '.html';
173	return (is_file($filename) && is_readable($filename)) \|\| ($this->deprecated_templates[$name] && $this->template_exists($this->deprecated_templates[$name]));
174	}
175
176
177	/**
178	* Register a GUI object to the client script
179	*
180	* @param string Object name
181	* @param string Object ID
182	* @return void
183	*/
184	public function add_gui_object($obj, $id)
185	{
186	$this->add_script(rcmail::JS_OBJECT_NAME.".gui_object('$obj', '$id');");
187	}
188
189
190	/**
191	* Call a client method
192	*
193	* @param string Method to call
194	* @param ... Additional arguments
195	*/
196	public function command()
197	{
198	$cmd = func_get_args();
199	if (strpos($cmd[0], 'plugin.') !== false)
200	$this->js_commands[] = array('triggerEvent', $cmd[0], $cmd[1]);
201	else
202	$this->js_commands[] = $cmd;
203	}
204
205
206	/**
207	* Add a localized label to the client environment
208	*/
209	public function add_label()
210	{
211	$args = func_get_args();
212	if (count($args) == 1 && is_array($args[0]))
213	$args = $args[0];
214
215	foreach ($args as $name) {
216	$this->js_labels[$name] = $this->app->gettext($name);
217	}
218	}
219
220
221	/**
222	* Invoke display_message command
223	*
224	* @param string $message Message to display
225	* @param string $type Message type [notice\|confirm\|error]
226	* @param array $vars Key-value pairs to be replaced in localized text
227	* @param boolean $override Override last set message
228	* @param int $timeout Message display time in seconds
229	* @uses self::command()
230	*/
231	public function show_message($message, $type='notice', $vars=null, $override=true, $timeout=0)
232	{
233	if ($override \|\| !$this->message) {
234	if ($this->app->text_exists($message)) {
235	if (!empty($vars))
236	$vars = array_map('Q', $vars);
237	$msgtext = $this->app->gettext(array('name' => $message, 'vars' => $vars));
238	}
239	else
240	$msgtext = $message;
241
242	$this->message = $message;
243	$this->command('display_message', $msgtext, $type, $timeout * 1000);
244	}
245	}
246
247
248	/**
249	* Delete all stored env variables and commands
250	*/
251	public function reset()
252	{
253	parent::reset();
254	$this->js_env = array();
255	$this->js_labels = array();
256	$this->js_commands = array();
257	$this->script_files = array();
258	$this->scripts = array();
259	$this->header = '';
260	$this->footer = '';
261	$this->body = '';
262	}
263
264
265	/**
266	* Redirect to a certain url
267	*
268	* @param mixed $p Either a string with the action or url parameters as key-value pairs
269	* @param int $delay Delay in seconds
270	*/
271	public function redirect($p = array(), $delay = 1)
272	{
273	$location = $this->app->url($p);
274	header('Location: ' . $location);
275	exit;
276	}
277
278
279	/**
280	* Send the request output to the client.
281	* This will either parse a skin tempalte or send an AJAX response
282	*
283	* @param string Template name
284	* @param boolean True if script should terminate (default)
285	*/
286	public function send($templ = null, $exit = true)
287	{
288	if ($templ != 'iframe') {
289	// prevent from endless loops
290	if ($exit != 'recur' && $this->app->plugins->is_processing('render_page')) {
291	rcube::raise_error(array('code' => 505, 'type' => 'php',
292	'file' => __FILE__, 'line' => __LINE__,
293	'message' => 'Recursion alert: ignoring output->send()'), true, false);
294	return;
295	}
296	$this->parse($templ, false);
297	}
298	else {
299	$this->framed = $templ == 'iframe' ? true : $this->framed;
300	$this->write();
301	}
302
303	// set output asap
304	ob_flush();
305	flush();
306
307	if ($exit) {
308	exit;
309	}
310	}
311
312
313	/**
314	* Process template and write to stdOut
315	*
316	* @param string $template HTML template content
317	*/
318	public function write($template = '')
319	{
320	// unlock interface after iframe load
321	$unlock = preg_replace('/[^a-z0-9]/i', '', $_REQUEST['_unlock']);
322	if ($this->framed) {
323	array_unshift($this->js_commands, array('set_busy', false, null, $unlock));
324	}
325	else if ($unlock) {
326	array_unshift($this->js_commands, array('hide_message', $unlock));
327	}
328
329	if (!empty($this->script_files))
330	$this->set_env('request_token', $this->app->get_request_token());
331
332	// write all env variables to client
333	$js = $this->framed ? "if(window.parent) {\n" : '';
334	$js .= $this->get_js_commands() . ($this->framed ? ' }' : '');
335	$this->add_script($js, 'head_top');
336
337	// send clickjacking protection headers
338	$iframe = $this->framed \|\| !empty($_REQUEST['_framed']);
339	if (!headers_sent() && ($xframe = $this->app->config->get('x_frame_options', 'sameorigin')))
340	header('X-Frame-Options: ' . ($iframe && $xframe == 'deny' ? 'sameorigin' : $xframe));
341
342	// call super method
343	$this->_write($template, $this->config->get('skin_path'));
344	}
345
346
347	/**
348	* Parse a specific skin template and deliver to stdout (or return)
349	*
350	* @param string Template name
351	* @param boolean Exit script
352	* @param boolean Don't write to stdout, return parsed content instead
353	*
354	* @link http://php.net/manual/en/function.exit.php
355	*/
356	function parse($name = 'main', $exit = true, $write = true)
357	{
358	$skin_path = $this->config->get('skin_path');
359	$plugin = false;
360	$realname = $name;
361	$temp = explode('.', $name, 2);
362
363	$this->plugin_skin_path = null;
364	$this->template_name = $realname;
365
366	if (count($temp) > 1) {
367	$plugin = $temp[0];
368	$name = $temp[1];
369	$skin_dir = $plugin . '/skins/' . $this->config->get('skin');
370	$skin_path = $this->plugin_skin_path = $this->app->plugins->dir . $skin_dir;
371
372	// fallback to default skin
373	if (!is_dir($skin_path)) {
374	$skin_dir = $plugin . '/skins/default';
375	$skin_path = $this->plugin_skin_path = $this->app->plugins->dir . $skin_dir;
376	}
377	}
378
379	$path = "$skin_path/templates/$name.html";
380
381	if (!is_readable($path) && $this->deprecated_templates[$realname]) {
382	$path = "$skin_path/templates/".$this->deprecated_templates[$realname].".html";
383	if (is_readable($path))
384	rcube::raise_error(array('code' => 502, 'type' => 'php',
385	'file' => __FILE__, 'line' => __LINE__,
386	'message' => "Using deprecated template '".$this->deprecated_templates[$realname]
387	."' in $skin_path/templates. Please rename to '".$realname."'"),
388	true, false);
389	}
390
391	// read template file
392	if (($templ = @file_get_contents($path)) === false) {
393	rcube::raise_error(array(
394	'code' => 501,
395	'type' => 'php',
396	'line' => __LINE__,
397	'file' => __FILE__,
398	'message' => 'Error loading template for '.$realname
399	), true, true);
400	return false;
401	}
402
403	// replace all path references to plugins/... with the configured plugins dir
404	// and /this/ to the current plugin skin directory
405	if ($plugin) {
406	$templ = preg_replace(array('/\bplugins\//', '/(["\']?)\/this\//'), array($this->app->plugins->url, '\\1'.$this->app->plugins->url.$skin_dir.'/'), $templ);
407	}
408
409	// parse for specialtags
410	$output = $this->parse_conditions($templ);
411	$output = $this->parse_xml($output);
412
413	// trigger generic hook where plugins can put additional content to the page
414	$hook = $this->app->plugins->exec_hook("render_page", array('template' => $realname, 'content' => $output));
415
416	// save some memory
417	$output = $hook['content'];
418	unset($hook['content']);
419
420	$output = $this->parse_with_globals($output);
421
422	// make sure all <form> tags have a valid request token
423	$output = preg_replace_callback('/<form\s+([^>]+)>/Ui', array($this, 'alter_form_tag'), $output);
424	$this->footer = preg_replace_callback('/<form\s+([^>]+)>/Ui', array($this, 'alter_form_tag'), $this->footer);
425
426	if ($write) {
427	// add debug console
428	if ($realname != 'error' && ($this->config->get('debug_level') & 8)) {
429	$this->add_footer('<div id="console" style="position:absolute;top:5px;left:5px;width:405px;padding:2px;background:white;z-index:9000;display:none">
430	<a href="#toggle" onclick="con=$(\'#dbgconsole\');con[con.is(\':visible\')?\'hide\':\'show\']();return false">console</a>
431	<textarea name="console" id="dbgconsole" rows="20" cols="40" style="display:none;width:400px;border:none;font-size:10px" spellcheck="false"></textarea></div>'
432	);
433	$this->add_script(
434	"if (!window.console \|\| !window.console.log) {\n".
435	" window.console = new rcube_console();\n".
436	" $('#console').show();\n".
437	"}", 'foot');
438	}
439	$this->write(trim($output));
440	}
441	else {
442	return $output;
443	}
444
445	if ($exit) {
446	exit;
447	}
448	}
449
450
451	/**
452	* Return executable javascript code for all registered commands
453	*
454	* @return string $out
455	*/
456	protected function get_js_commands()
457	{
458	$out = '';
459	if (!$this->framed && !empty($this->js_env)) {
460	$out .= rcmail::JS_OBJECT_NAME . '.set_env('.self::json_serialize($this->js_env).");\n";
461	}
462	if (!empty($this->js_labels)) {
463	$this->command('add_label', $this->js_labels);
464	}
465	foreach ($this->js_commands as $i => $args) {
466	$method = array_shift($args);
467	foreach ($args as $i => $arg) {
468	$args[$i] = self::json_serialize($arg);
469	}
470	$parent = $this->framed \|\| preg_match('/^parent\./', $method);
471	$out .= sprintf(
472	"%s.%s(%s);\n",
473	($parent ? 'if(window.parent && parent.'.rcmail::JS_OBJECT_NAME.') parent.' : '') . rcmail::JS_OBJECT_NAME,
474	preg_replace('/^parent\./', '', $method),
475	implode(',', $args)
476	);
477	}
478
479	return $out;
480	}
481
482
483	/**
484	* Make URLs starting with a slash point to skin directory
485	*
486	* @param string Input string
487	* @return string
488	*/
489	public function abs_url($str)
490	{
491	if ($str[0] == '/')
492	return $this->config->get('skin_path') . $str;
493	else
494	return $str;
495	}
496
497
498	/**
499	* Show error page and terminate script execution
500	*
501	* @param int $code Error code
502	* @param string $message Error message
503	*/
504	public function raise_error($code, $message)
505	{
506	global $__page_content, $ERROR_CODE, $ERROR_MESSAGE;
507
508	$ERROR_CODE = $code;
509	$ERROR_MESSAGE = $message;
510
511	include INSTALL_PATH . 'program/steps/utils/error.inc';
512	exit;
513	}
514
515
516	/*** Template parsing methods ***/
517
518	/**
519	* Replace all strings ($varname)
520	* with the content of the according global variable.
521	*/
522	protected function parse_with_globals($input)
523	{
524	$GLOBALS['__version'] = html::quote(RCMAIL_VERSION);
525	$GLOBALS['__comm_path'] = html::quote($this->app->comm_path);
526	$GLOBALS['__skin_path'] = Q($this->config->get('skin_path'));
527
528	return preg_replace_callback('/\$(__[a-z0-9_\-]+)/',
529	array($this, 'globals_callback'), $input);
530	}
531
532
533	/**
534	* Callback funtion for preg_replace_callback() in parse_with_globals()
535	*/
536	protected function globals_callback($matches)
537	{
538	return $GLOBALS[$matches[1]];
539	}
540
541
542	/**
543	* Public wrapper to dipp into template parsing.
544	*
545	* @param string $input
546	* @return string
547	* @uses rcube_output_html::parse_xml()
548	* @since 0.1-rc1
549	*/
550	public function just_parse($input)
551	{
552	return $this->parse_xml($input);
553	}
554
555
556	/**
557	* Parse for conditional tags
558	*
559	* @param string $input
560	* @return string
561	*/
562	protected function parse_conditions($input)
563	{
564	$matches = preg_split('/<roundcube:(if\|elseif\|else\|endif)\s+([^>]+)>\n?/is', $input, 2, PREG_SPLIT_DELIM_CAPTURE);
565	if ($matches && count($matches) == 4) {
566	if (preg_match('/^(else\|endif)$/i', $matches[1])) {
567	return $matches[0] . $this->parse_conditions($matches[3]);
568	}
569	$attrib = html::parse_attrib_string($matches[2]);
570	if (isset($attrib['condition'])) {
571	$condmet = $this->check_condition($attrib['condition']);
572	$submatches = preg_split('/<roundcube:(elseif\|else\|endif)\s+([^>]+)>\n?/is', $matches[3], 2, PREG_SPLIT_DELIM_CAPTURE);
573	if ($condmet) {
574	$result = $submatches[0];
575	$result.= ($submatches[1] != 'endif' ? preg_replace('/.*<roundcube:endif\s+[^>]+>\n?/Uis', '', $submatches[3], 1) : $submatches[3]);
576	}
577	else {
578	$result = "<roundcube:$submatches[1] $submatches[2]>" . $submatches[3];
579	}
580	return $matches[0] . $this->parse_conditions($result);
581	}
582	rcube::raise_error(array(
583	'code' => 500,
584	'type' => 'php',
585	'line' => __LINE__,
586	'file' => __FILE__,
587	'message' => "Unable to parse conditional tag " . $matches[2]
588	), true, false);
589	}
590	return $input;
591	}
592
593
594	/**
595	* Determines if a given condition is met
596	*
597	* @todo Get rid off eval() once I understand what this does.
598	* @todo Extend this to allow real conditions, not just "set"
599	* @param string Condition statement
600	* @return boolean True if condition is met, False if not
601	*/
602	protected function check_condition($condition)
603	{
604	return eval("return (".$this->parse_expression($condition).");");
605	}
606
607
608	/**
609	* Inserts hidden field with CSRF-prevention-token into POST forms
610	*/
611	protected function alter_form_tag($matches)
612	{
613	$out = $matches[0];
614	$attrib = html::parse_attrib_string($matches[1]);
615
616	if (strtolower($attrib['method']) == 'post') {
617	$hidden = new html_hiddenfield(array('name' => '_token', 'value' => $this->app->get_request_token()));
618	$out .= "\n" . $hidden->show();
619	}
620
621	return $out;
622	}
623
624
625	/**
626	* Parses expression and replaces variables
627	*
628	* @param string Expression statement
629	* @return string Expression value
630	*/
631	protected function parse_expression($expression)
632	{
633	return preg_replace(
634	array(
635	'/session:([a-z0-9_]+)/i',
636	'/config:([a-z0-9_]+)(:([a-z0-9_]+))?/i',
637	'/env:([a-z0-9_]+)/i',
638	'/request:([a-z0-9_]+)/i',
639	'/cookie:([a-z0-9_]+)/i',
640	'/browser:([a-z0-9_]+)/i',
641	'/template:name/i',
642	),
643	array(
644	"\$_SESSION['\\1']",
645	"\$this->app->config->get('\\1',get_boolean('\\3'))",
646	"\$this->env['\\1']",
647	"rcube_utils::get_input_value('\\1', rcube_utils::INPUT_GPC)",
648	"\$_COOKIE['\\1']",
649	"\$this->browser->{'\\1'}",
650	$this->template_name,
651	),
652	$expression);
653	}
654
655
656	/**
657	* Search for special tags in input and replace them
658	* with the appropriate content
659	*
660	* @param string Input string to parse
661	* @return string Altered input string
662	* @todo Use DOM-parser to traverse template HTML
663	* @todo Maybe a cache.
664	*/
665	protected function parse_xml($input)
666	{
667	return preg_replace_callback('/<roundcube:([-_a-z]+)\s+((?:[^>]\|\\\\>)+)(?<!\\\\)>/Ui', array($this, 'xml_command'), $input);
668	}
669
670
671	/**
672	* Callback function for parsing an xml command tag
673	* and turn it into real html content
674	*
675	* @param array Matches array of preg_replace_callback
676	* @return string Tag/Object content
677	*/
678	protected function xml_command($matches)
679	{
680	$command = strtolower($matches[1]);
681	$attrib = html::parse_attrib_string($matches[2]);
682
683	// empty output if required condition is not met
684	if (!empty($attrib['condition']) && !$this->check_condition($attrib['condition'])) {
685	return '';
686	}
687
688	// execute command
689	switch ($command) {
690	// return a button
691	case 'button':
692	if ($attrib['name'] \|\| $attrib['command']) {
693	return $this->button($attrib);
694	}
695	break;
696
697	// show a label
698	case 'label':
699	if ($attrib['name'] \|\| $attrib['command']) {
700	$vars = $attrib + array('product' => $this->config->get('product_name'));
701	unset($vars['name'], $vars['command']);
702	$label = $this->app->gettext($attrib + array('vars' => $vars));
703	return !$attrib['noshow'] ? (get_boolean((string)$attrib['html']) ? $label : html::quote($label)) : '';
704	}
705	break;
706
707	// include a file
708	case 'include':
709	if (!$this->plugin_skin_path \|\| !is_file($path = realpath($this->plugin_skin_path . $attrib['file'])))
710	$path = realpath(($attrib['skin_path'] ? $attrib['skin_path'] : $this->config->get('skin_path')).$attrib['file']);
711
712	if (is_readable($path)) {
713	if ($this->config->get('skin_include_php')) {
714	$incl = $this->include_php($path);
715	}
716	else {
717	$incl = file_get_contents($path);
718	}
719	$incl = $this->parse_conditions($incl);
720	return $this->parse_xml($incl);
721	}
722	break;
723
724	case 'plugin.include':
725	$hook = $this->app->plugins->exec_hook("template_plugin_include", $attrib);
726	return $hook['content'];
727	break;
728
729	// define a container block
730	case 'container':
731	if ($attrib['name'] && $attrib['id']) {
732	$this->command('gui_container', $attrib['name'], $attrib['id']);
733	// let plugins insert some content here
734	$hook = $this->app->plugins->exec_hook("template_container", $attrib);
735	return $hook['content'];
736	}
737	break;
738
739	// return code for a specific application object
740	case 'object':
741	$object = strtolower($attrib['name']);
742	$content = '';
743
744	// we are calling a class/method
745	if (($handler = $this->object_handlers[$object]) && is_array($handler)) {
746	if ((is_object($handler[0]) && method_exists($handler[0], $handler[1])) \|\|
747	(is_string($handler[0]) && class_exists($handler[0])))
748	$content = call_user_func($handler, $attrib);
749	}
750	// execute object handler function
751	else if (function_exists($handler)) {
752	$content = call_user_func($handler, $attrib);
753	}
754	else if ($object == 'doctype') {
755	$content = html::doctype($attrib['value']);
756	}
757	else if ($object == 'logo') {
758	$attrib += array('alt' => $this->xml_command(array('', 'object', 'name="productname"')));
759	if ($logo = $this->config->get('skin_logo'))
760	$attrib['src'] = $logo;
761	$content = html::img($attrib);
762	}
763	else if ($object == 'productname') {
764	$name = $this->config->get('product_name', 'Roundcube Webmail');
765	$content = html::quote($name);
766	}
767	else if ($object == 'version') {
768	$ver = (string)RCMAIL_VERSION;
769	if (is_file(INSTALL_PATH . '.svn/entries')) {
770	if (preg_match('/Revision:\s(\d+)/', @shell_exec('svn info'), $regs))
771	$ver .= ' [SVN r'.$regs[1].']';
772	}
773	$content = html::quote($ver);
774	}
775	else if ($object == 'steptitle') {
776	$content = html::quote($this->get_pagetitle());
777	}
778	else if ($object == 'pagetitle') {
779	if ($this->config->get('devel_mode') && !empty($_SESSION['username']))
780	$title = $_SESSION['username'].' :: ';
781	else if ($prod_name = $this->config->get('product_name'))
782	$title = $prod_name . ' :: ';
783	else
784	$title = '';
785	$title .= $this->get_pagetitle();
786	$content = html::quote($title);
787	}
788
789	// exec plugin hooks for this template object
790	$hook = $this->app->plugins->exec_hook("template_object_$object", $attrib + array('content' => $content));
791	return $hook['content'];
792
793	// return code for a specified eval expression
794	case 'exp':
795	$value = $this->parse_expression($attrib['expression']);
796	return eval("return html::quote($value);");
797
798	// return variable
799	case 'var':
800	$var = explode(':', $attrib['name']);
801	$name = $var[1];
802	$value = '';
803
804	switch ($var[0]) {
805	case 'env':
806	$value = $this->env[$name];
807	break;
808	case 'config':
809	$value = $this->config->get($name);
810	if (is_array($value) && $value[$_SESSION['storage_host']]) {
811	$value = $value[$_SESSION['storage_host']];
812	}
813	break;
814	case 'request':
815	$value = rcube_utils::get_input_value($name, rcube_utils::INPUT_GPC);
816	break;
817	case 'session':
818	$value = $_SESSION[$name];
819	break;
820	case 'cookie':
821	$value = htmlspecialchars($_COOKIE[$name]);
822	break;
823	case 'browser':
824	$value = $this->browser->{$name};
825	break;
826	}
827
828	if (is_array($value)) {
829	$value = implode(', ', $value);
830	}
831
832	return html::quote($value);
833	break;
834	}
835	return '';
836	}
837
838
839	/**
840	* Include a specific file and return it's contents
841	*
842	* @param string File path
843	* @return string Contents of the processed file
844	*/
845	protected function include_php($file)
846	{
847	ob_start();
848	include $file;
849	$out = ob_get_contents();
850	ob_end_clean();
851
852	return $out;
853	}
854
855
856	/**
857	* Create and register a button
858	*
859	* @param array Named button attributes
860	* @return string HTML button
861	* @todo Remove all inline JS calls and use jQuery instead.
862	* @todo Remove all sprintf()'s - they are pretty, but also slow.
863	*/
864	public function button($attrib)
865	{
866	static $s_button_count = 100;
867
868	// these commands can be called directly via url
869	$a_static_commands = array('compose', 'list', 'preferences', 'folders', 'identities');
870
871	if (!($attrib['command'] \|\| $attrib['name'])) {
872	return '';
873	}
874
875	// try to find out the button type
876	if ($attrib['type']) {
877	$attrib['type'] = strtolower($attrib['type']);
878	}
879	else {
880	$attrib['type'] = ($attrib['image'] \|\| $attrib['imagepas'] \|\| $attrib['imageact']) ? 'image' : 'link';
881	}
882
883	$command = $attrib['command'];
884
885	if ($attrib['task'])
886	$command = $attrib['task'] . '.' . $command;
887
888	if (!$attrib['image']) {
889	$attrib['image'] = $attrib['imagepas'] ? $attrib['imagepas'] : $attrib['imageact'];
890	}
891
892	if (!$attrib['id']) {
893	$attrib['id'] = sprintf('rcmbtn%d', $s_button_count++);
894	}
895	// get localized text for labels and titles
896	if ($attrib['title']) {
897	$attrib['title'] = html::quote($this->app->gettext($attrib['title'], $attrib['domain']));
898	}
899	if ($attrib['label']) {
900	$attrib['label'] = html::quote($this->app->gettext($attrib['label'], $attrib['domain']));
901	}
902	if ($attrib['alt']) {
903	$attrib['alt'] = html::quote($this->app->gettext($attrib['alt'], $attrib['domain']));
904	}
905
906	// set title to alt attribute for IE browsers
907	if ($this->browser->ie && !$attrib['title'] && $attrib['alt']) {
908	$attrib['title'] = $attrib['alt'];
909	}
910
911	// add empty alt attribute for XHTML compatibility
912	if (!isset($attrib['alt'])) {
913	$attrib['alt'] = '';
914	}
915
916	// register button in the system
917	if ($attrib['command']) {
918	$this->add_script(sprintf(
919	"%s.register_button('%s', '%s', '%s', '%s', '%s', '%s');",
920	rcmail::JS_OBJECT_NAME,
921	$command,
922	$attrib['id'],
923	$attrib['type'],
924	$attrib['imageact'] ? $this->abs_url($attrib['imageact']) : $attrib['classact'],
925	$attrib['imagesel'] ? $this->abs_url($attrib['imagesel']) : $attrib['classsel'],
926	$attrib['imageover'] ? $this->abs_url($attrib['imageover']) : ''
927	));
928
929	// make valid href to specific buttons
930	if (in_array($attrib['command'], rcmail::$main_tasks)) {
931	$attrib['href'] = $this->app->url(array('task' => $attrib['command']));
932	$attrib['onclick'] = sprintf("%s.command('switch-task','%s');return false", rcmail::JS_OBJECT_NAME, $attrib['command']);
933	}
934	else if ($attrib['task'] && in_array($attrib['task'], rcmail::$main_tasks)) {
935	$attrib['href'] = $this->app->url(array('action' => $attrib['command'], 'task' => $attrib['task']));
936	}
937	else if (in_array($attrib['command'], $a_static_commands)) {
938	$attrib['href'] = $this->app->url(array('action' => $attrib['command']));
939	}
940	else if ($attrib['command'] == 'permaurl' && !empty($this->env['permaurl'])) {
941	$attrib['href'] = $this->env['permaurl'];
942	}
943	}
944
945	// overwrite attributes
946	if (!$attrib['href']) {
947	$attrib['href'] = '#';
948	}
949	if ($attrib['task']) {
950	if ($attrib['classact'])
951	$attrib['class'] = $attrib['classact'];
952	}
953	else if ($command && !$attrib['onclick']) {
954	$attrib['onclick'] = sprintf(
955	"return %s.command('%s','%s',this)",
956	rcmail::JS_OBJECT_NAME,
957	$command,
958	$attrib['prop']
959	);
960	}
961
962	$out = '';
963
964	// generate image tag
965	if ($attrib['type'] == 'image') {
966	$attrib_str = html::attrib_string(
967	$attrib,
968	array(
969	'style', 'class', 'id', 'width', 'height', 'border', 'hspace',
970	'vspace', 'align', 'alt', 'tabindex', 'title'
971	)
972	);
973	$btn_content = sprintf('<img src="%s"%s />', $this->abs_url($attrib['image']), $attrib_str);
974	if ($attrib['label']) {
975	$btn_content .= ' '.$attrib['label'];
976	}
977	$link_attrib = array('href', 'onclick', 'onmouseover', 'onmouseout', 'onmousedown', 'onmouseup', 'target');
978	}
979	else if ($attrib['type'] == 'link') {
980	$btn_content = isset($attrib['content']) ? $attrib['content'] : ($attrib['label'] ? $attrib['label'] : $attrib['command']);
981	$link_attrib = array('href', 'onclick', 'title', 'id', 'class', 'style', 'tabindex', 'target');
982	if ($attrib['innerclass'])
983	$btn_content = html::span($attrib['innerclass'], $btn_content);
984	}
985	else if ($attrib['type'] == 'input') {
986	$attrib['type'] = 'button';
987
988	if ($attrib['label']) {
989	$attrib['value'] = $attrib['label'];
990	}
991	if ($attrib['command']) {
992	$attrib['disabled'] = 'disabled';
993	}
994
995	$out = html::tag('input', $attrib, null, array('type', 'value', 'onclick', 'id', 'class', 'style', 'tabindex', 'disabled'));
996	}
997
998	// generate html code for button
999	if ($btn_content) {
1000	$attrib_str = html::attrib_string($attrib, $link_attrib);
1001	$out = sprintf('<a%s>%s</a>', $attrib_str, $btn_content);
1002	}
1003
1004	return $out;
1005	}
1006
1007
1008	/**
1009	* Link an external script file
1010	*
1011	* @param string File URL
1012	* @param string Target position [head\|foot]
1013	*/
1014	public function include_script($file, $position='head')
1015	{
1016	static $sa_files = array();
1017
1018	if (!preg_match('\|^https?://\|i', $file) && $file[0] != '/') {
1019	$file = $this->scripts_path . $file;
1020	if ($fs = @filemtime($file)) {
1021	$file .= '?s=' . $fs;
1022	}
1023	}
1024
1025	if (in_array($file, $sa_files)) {
1026	return;
1027	}
1028
1029	$sa_files[] = $file;
1030
1031	if (!is_array($this->script_files[$position])) {
1032	$this->script_files[$position] = array();
1033	}
1034
1035	$this->script_files[$position][] = $file;
1036	}
1037
1038
1039	/**
1040	* Add inline javascript code
1041	*
1042	* @param string JS code snippet
1043	* @param string Target position [head\|head_top\|foot]
1044	*/
1045	public function add_script($script, $position='head')
1046	{
1047	if (!isset($this->scripts[$position])) {
1048	$this->scripts[$position] = "\n" . rtrim($script);
1049	}
1050	else {
1051	$this->scripts[$position] .= "\n" . rtrim($script);
1052	}
1053	}
1054
1055
1056	/**
1057	* Link an external css file
1058	*
1059	* @param string File URL
1060	*/
1061	public function include_css($file)
1062	{
1063	$this->css_files[] = $file;
1064	}
1065
1066
1067	/**
1068	* Add HTML code to the page header
1069	*
1070	* @param string $str HTML code
1071	*/
1072	public function add_header($str)
1073	{
1074	$this->header .= "\n" . $str;
1075	}
1076
1077
1078	/**
1079	* Add HTML code to the page footer
1080	* To be added right befor </body>
1081	*
1082	* @param string $str HTML code
1083	*/
1084	public function add_footer($str)
1085	{
1086	$this->footer .= "\n" . $str;
1087	}
1088
1089
1090	/**
1091	* Process template and write to stdOut
1092	*
1093	* @param string HTML template
1094	* @param string Base for absolute paths
1095	*/
1096	public function _write($templ = '', $base_path = '')
1097	{
1098	$output = empty($templ) ? $this->default_template : trim($templ);
1099
1100	// set default page title
1101	if (empty($this->pagetitle)) {
1102	$this->pagetitle = 'Roundcube Mail';
1103	}
1104
1105	// replace specialchars in content
1106	$page_title = html::quote($this->pagetitle);
1107	$page_header = '';
1108	$page_footer = '';
1109
1110	// include meta tag with charset
1111	if (!empty($this->charset)) {
1112	if (!headers_sent()) {
1113	header('Content-Type: text/html; charset=' . $this->charset);
1114	}
1115	$page_header = '<meta http-equiv="content-type"';
1116	$page_header.= ' content="text/html; charset=';
1117	$page_header.= $this->charset . '" />'."\n";
1118	}
1119
1120	// definition of the code to be placed in the document header and footer
1121	if (is_array($this->script_files['head'])) {
1122	foreach ($this->script_files['head'] as $file) {
1123	$page_header .= html::script($file);
1124	}
1125	}
1126
1127	$head_script = $this->scripts['head_top'] . $this->scripts['head'];
1128	if (!empty($head_script)) {
1129	$page_header .= html::script(array(), $head_script);
1130	}
1131
1132	if (!empty($this->header)) {
1133	$page_header .= $this->header;
1134	}
1135
1136	// put docready commands into page footer
1137	if (!empty($this->scripts['docready'])) {
1138	$this->add_script('$(document).ready(function(){ ' . $this->scripts['docready'] . "\n});", 'foot');
1139	}
1140
1141	if (is_array($this->script_files['foot'])) {
1142	foreach ($this->script_files['foot'] as $file) {
1143	$page_footer .= html::script($file);
1144	}
1145	}
1146
1147	if (!empty($this->footer)) {
1148	$page_footer .= $this->footer . "\n";
1149	}
1150
1151	if (!empty($this->scripts['foot'])) {
1152	$page_footer .= html::script(array(), $this->scripts['foot']);
1153	}
1154
1155	// find page header
1156	if ($hpos = stripos($output, '</head>')) {
1157	$page_header .= "\n";
1158	}
1159	else {
1160	if (!is_numeric($hpos)) {
1161	$hpos = stripos($output, '<body');
1162	}
1163	if (!is_numeric($hpos) && ($hpos = stripos($output, '<html'))) {
1164	while ($output[$hpos] != '>') {
1165	$hpos++;
1166	}
1167	$hpos++;
1168	}
1169	$page_header = "<head>\n<title>$page_title</title>\n$page_header\n</head>\n";
1170	}
1171
1172	// add page hader
1173	if ($hpos) {
1174	$output = substr_replace($output, $page_header, $hpos, 0);
1175	}
1176	else {
1177	$output = $page_header . $output;
1178	}
1179
1180	// add page footer
1181	if (($fpos = strripos($output, '</body>')) \|\| ($fpos = strripos($output, '</html>'))) {
1182	$output = substr_replace($output, $page_footer."\n", $fpos, 0);
1183	}
1184	else {
1185	$output .= "\n".$page_footer;
1186	}
1187
1188	// add css files in head, before scripts, for speed up with parallel downloads
1189	if (!empty($this->css_files) &&
1190	(($pos = stripos($output, '<script ')) \|\| ($pos = stripos($output, '</head>')))
1191	) {
1192	$css = '';
1193	foreach ($this->css_files as $file) {
1194	$css .= html::tag('link', array('rel' => 'stylesheet',
1195	'type' => 'text/css', 'href' => $file, 'nl' => true));
1196	}
1197	$output = substr_replace($output, $css, $pos, 0);
1198	}
1199
1200	$this->base_path = $base_path;
1201
1202	// correct absolute paths in images and other tags
1203	// add timestamp to .js and .css filename
1204	$output = preg_replace_callback(
1205	'!(src\|href\|background)=(["\']?)([a-z0-9/_.-]+)(["\'\s>])!i',
1206	array($this, 'file_callback'), $output);
1207
1208	// trigger hook with final HTML content to be sent
1209	$hook = rcmail::get_instance()->plugins->exec_hook("send_page", array('content' => $output));
1210	if (!$hook['abort']) {
1211	if ($this->charset != RCMAIL_CHARSET) {
1212	echo rcube_charset::convert($hook['content'], RCMAIL_CHARSET, $this->charset);
1213	}
1214	else {
1215	echo $hook['content'];
1216	}
1217	}
1218	}
1219
1220
1221	/**
1222	* Callback function for preg_replace_callback in write()
1223	*
1224	* @return string Parsed string
1225	*/
1226	protected function file_callback($matches)
1227	{
1228	$file = $matches[3];
1229
1230	// correct absolute paths
1231	if ($file[0] == '/') {
1232	$file = $this->base_path . $file;
1233	}
1234
1235	// add file modification timestamp
1236	if (preg_match('/\.(js\|css)$/', $file)) {
1237	if ($fs = @filemtime($file)) {
1238	$file .= '?s=' . $fs;
1239	}
1240	}
1241
1242	return $matches[1] . '=' . $matches[2] . $file . $matches[4];
1243	}
1244
1245
1246	/* *********** common functions delivering gui objects ************ */
1247
1248
1249	/**
1250	* Create a form tag with the necessary hidden fields
1251	*
1252	* @param array Named tag parameters
1253	* @return string HTML code for the form
1254	*/
1255	public function form_tag($attrib, $content = null)
1256	{
1257	if ($this->framed \|\| !empty($_REQUEST['_framed'])) {
1258	$hiddenfield = new html_hiddenfield(array('name' => '_framed', 'value' => '1'));
1259	$hidden = $hiddenfield->show();
1260	}
1261
1262	if (!$content)
1263	$attrib['noclose'] = true;
1264
1265	return html::tag('form',
1266	$attrib + array('action' => "./", 'method' => "get"),
1267	$hidden . $content,
1268	array('id','class','style','name','method','action','enctype','onsubmit'));
1269	}
1270
1271
1272	/**
1273	* Build a form tag with a unique request token
1274	*
1275	* @param array Named tag parameters including 'action' and 'task' values which will be put into hidden fields
1276	* @param string Form content
1277	* @return string HTML code for the form
1278	*/
1279	public function request_form($attrib, $content = '')
1280	{
1281	$hidden = new html_hiddenfield();
1282	if ($attrib['task']) {
1283	$hidden->add(array('name' => '_task', 'value' => $attrib['task']));
1284	}
1285	if ($attrib['action']) {
1286	$hidden->add(array('name' => '_action', 'value' => $attrib['action']));
1287	}
1288
1289	unset($attrib['task'], $attrib['request']);
1290	$attrib['action'] = './';
1291
1292	// we already have a <form> tag
1293	if ($attrib['form']) {
1294	if ($this->framed \|\| !empty($_REQUEST['_framed']))
1295	$hidden->add(array('name' => '_framed', 'value' => '1'));
1296	return $hidden->show() . $content;
1297	}
1298	else
1299	return $this->form_tag($attrib, $hidden->show() . $content);
1300	}
1301
1302
1303	/**
1304	* GUI object 'username'
1305	* Showing IMAP username of the current session
1306	*
1307	* @param array Named tag parameters (currently not used)
1308	* @return string HTML code for the gui object
1309	*/
1310	public function current_username($attrib)
1311	{
1312	static $username;
1313
1314	// alread fetched
1315	if (!empty($username)) {
1316	return $username;
1317	}
1318
1319	// Current username is an e-mail address
1320	if (strpos($_SESSION['username'], '@')) {
1321	$username = $_SESSION['username'];
1322	}
1323	// get e-mail address from default identity
1324	else if ($sql_arr = $this->app->user->get_identity()) {
1325	$username = $sql_arr['email'];
1326	}
1327	else {
1328	$username = $this->app->user->get_username();
1329	}
1330
1331	return rcube_utils::idn_to_utf8($username);
1332	}
1333
1334
1335	/**
1336	* GUI object 'loginform'
1337	* Returns code for the webmail login form
1338	*
1339	* @param array Named parameters
1340	* @return string HTML code for the gui object
1341	*/
1342	protected function login_form($attrib)
1343	{
1344	$default_host = $this->config->get('default_host');
1345	$autocomplete = (int) $this->config->get('login_autocomplete');
1346
1347	$_SESSION['temp'] = true;
1348
1349	// save original url
1350	$url = rcube_utils::get_input_value('_url', rcube_utils::INPUT_POST);
1351	if (empty($url) && !preg_match('/_(task\|action)=logout/', $_SERVER['QUERY_STRING']))
1352	$url = $_SERVER['QUERY_STRING'];
1353
1354	// set atocomplete attribute
1355	$user_attrib = $autocomplete > 0 ? array() : array('autocomplete' => 'off');
1356	$host_attrib = $autocomplete > 0 ? array() : array('autocomplete' => 'off');
1357	$pass_attrib = $autocomplete > 1 ? array() : array('autocomplete' => 'off');
1358
1359	$input_task = new html_hiddenfield(array('name' => '_task', 'value' => 'login'));
1360	$input_action = new html_hiddenfield(array('name' => '_action', 'value' => 'login'));
1361	$input_tzone = new html_hiddenfield(array('name' => '_timezone', 'id' => 'rcmlogintz', 'value' => '_default_'));
1362	$input_dst = new html_hiddenfield(array('name' => '_dstactive', 'id' => 'rcmlogindst', 'value' => '_default_'));
1363	$input_url = new html_hiddenfield(array('name' => '_url', 'id' => 'rcmloginurl', 'value' => $url));
1364	$input_user = new html_inputfield(array('name' => '_user', 'id' => 'rcmloginuser')
1365	+ $attrib + $user_attrib);
1366	$input_pass = new html_passwordfield(array('name' => '_pass', 'id' => 'rcmloginpwd')
1367	+ $attrib + $pass_attrib);
1368	$input_host = null;
1369
1370	if (is_array($default_host) && count($default_host) > 1) {
1371	$input_host = new html_select(array('name' => '_host', 'id' => 'rcmloginhost'));
1372
1373	foreach ($default_host as $key => $value) {
1374	if (!is_array($value)) {
1375	$input_host->add($value, (is_numeric($key) ? $value : $key));
1376	}
1377	else {
1378	$input_host = null;
1379	break;
1380	}
1381	}
1382	}
1383	else if (is_array($default_host) && ($host = array_pop($default_host))) {
1384	$hide_host = true;
1385	$input_host = new html_hiddenfield(array(
1386	'name' => '_host', 'id' => 'rcmloginhost', 'value' => $host) + $attrib);
1387	}
1388	else if (empty($default_host)) {
1389	$input_host = new html_inputfield(array('name' => '_host', 'id' => 'rcmloginhost')
1390	+ $attrib + $host_attrib);
1391	}
1392
1393	$form_name = !empty($attrib['form']) ? $attrib['form'] : 'form';
1394	$this->add_gui_object('loginform', $form_name);
1395
1396	// create HTML table with two cols
1397	$table = new html_table(array('cols' => 2));
1398
1399	$table->add('title', html::label('rcmloginuser', html::quote($this->app->gettext('username'))));
1400	$table->add('input', $input_user->show(rcube_utils::get_input_value('_user', rcube_utils::INPUT_GPC)));
1401
1402	$table->add('title', html::label('rcmloginpwd', html::quote($this->app->gettext('password'))));
1403	$table->add('input', $input_pass->show());
1404
1405	// add host selection row
1406	if (is_object($input_host) && !$hide_host) {
1407	$table->add('title', html::label('rcmloginhost', html::quote($this->app->gettext('server'))));
1408	$table->add('input', $input_host->show(rcube_utils::get_input_value('_host', rcube_utils::INPUT_GPC)));
1409	}
1410
1411	$out = $input_task->show();
1412	$out .= $input_action->show();
1413	$out .= $input_tzone->show();
1414	$out .= $input_dst->show();
1415	$out .= $input_url->show();
1416	$out .= $table->show();
1417
1418	if ($hide_host) {
1419	$out .= $input_host->show();
1420	}
1421
1422	// surround html output with a form tag
1423	if (empty($attrib['form'])) {
1424	$out = $this->form_tag(array('name' => $form_name, 'method' => 'post'), $out);
1425	}
1426
1427	return $out;
1428	}
1429
1430
1431	/**
1432	* GUI object 'preloader'
1433	* Loads javascript code for images preloading
1434	*
1435	* @param array Named parameters
1436	* @return void
1437	*/
1438	protected function preloader($attrib)
1439	{
1440	$images = preg_split('/[\s\t\n,]+/', $attrib['images'], -1, PREG_SPLIT_NO_EMPTY);
1441	$images = array_map(array($this, 'abs_url'), $images);
1442
1443	if (empty($images) \|\| $this->app->task == 'logout')
1444	return;
1445
1446	$this->add_script('var images = ' . self::json_serialize($images) .';
1447	for (var i=0; i<images.length; i++) {
1448	img = new Image();
1449	img.src = images[i];
1450	}', 'docready');
1451	}
1452
1453
1454	/**
1455	* GUI object 'searchform'
1456	* Returns code for search function
1457	*
1458	* @param array Named parameters
1459	* @return string HTML code for the gui object
1460	*/
1461	protected function search_form($attrib)
1462	{
1463	// add some labels to client
1464	$this->add_label('searching');
1465
1466	$attrib['name'] = '_q';
1467
1468	if (empty($attrib['id'])) {
1469	$attrib['id'] = 'rcmqsearchbox';
1470	}
1471	if ($attrib['type'] == 'search' && !$this->browser->khtml) {
1472	unset($attrib['type'], $attrib['results']);
1473	}
1474
1475	$input_q = new html_inputfield($attrib);
1476	$out = $input_q->show();
1477
1478	$this->add_gui_object('qsearchbox', $attrib['id']);
1479
1480	// add form tag around text field
1481	if (empty($attrib['form'])) {
1482	$out = $this->form_tag(array(
1483	'name' => "rcmqsearchform",
1484	'onsubmit' => rcmail::JS_OBJECT_NAME . ".command('search');return false;",
1485	'style' => "display:inline"),
1486	$out);
1487	}
1488
1489	return $out;
1490	}
1491
1492
1493	/**
1494	* Builder for GUI object 'message'
1495	*
1496	* @param array Named tag parameters
1497	* @return string HTML code for the gui object
1498	*/
1499	protected function message_container($attrib)
1500	{
1501	if (isset($attrib['id']) === false) {
1502	$attrib['id'] = 'rcmMessageContainer';
1503	}
1504
1505	$this->add_gui_object('message', $attrib['id']);
1506
1507	return html::div($attrib, '');
1508	}
1509
1510
1511	/**
1512	* GUI object 'charsetselector'
1513	*
1514	* @param array Named parameters for the select tag
1515	* @return string HTML code for the gui object
1516	*/
1517	public function charset_selector($attrib)
1518	{
1519	// pass the following attributes to the form class
1520	$field_attrib = array('name' => '_charset');
1521	foreach ($attrib as $attr => $value) {
1522	if (in_array($attr, array('id', 'name', 'class', 'style', 'size', 'tabindex'))) {
1523	$field_attrib[$attr] = $value;
1524	}
1525	}
1526
1527	$charsets = array(
1528	'UTF-8' => 'UTF-8 ('.$this->app->gettext('unicode').')',
1529	'US-ASCII' => 'ASCII ('.$this->app->gettext('english').')',
1530	'ISO-8859-1' => 'ISO-8859-1 ('.$this->app->gettext('westerneuropean').')',
1531	'ISO-8859-2' => 'ISO-8859-2 ('.$this->app->gettext('easterneuropean').')',
1532	'ISO-8859-4' => 'ISO-8859-4 ('.$this->app->gettext('baltic').')',
1533	'ISO-8859-5' => 'ISO-8859-5 ('.$this->app->gettext('cyrillic').')',
1534	'ISO-8859-6' => 'ISO-8859-6 ('.$this->app->gettext('arabic').')',
1535	'ISO-8859-7' => 'ISO-8859-7 ('.$this->app->gettext('greek').')',
1536	'ISO-8859-8' => 'ISO-8859-8 ('.$this->app->gettext('hebrew').')',
1537	'ISO-8859-9' => 'ISO-8859-9 ('.$this->app->gettext('turkish').')',
1538	'ISO-8859-10' => 'ISO-8859-10 ('.$this->app->gettext('nordic').')',
1539	'ISO-8859-11' => 'ISO-8859-11 ('.$this->app->gettext('thai').')',
1540	'ISO-8859-13' => 'ISO-8859-13 ('.$this->app->gettext('baltic').')',
1541	'ISO-8859-14' => 'ISO-8859-14 ('.$this->app->gettext('celtic').')',
1542	'ISO-8859-15' => 'ISO-8859-15 ('.$this->app->gettext('westerneuropean').')',
1543	'ISO-8859-16' => 'ISO-8859-16 ('.$this->app->gettext('southeasterneuropean').')',
1544	'WINDOWS-1250' => 'Windows-1250 ('.$this->app->gettext('easterneuropean').')',
1545	'WINDOWS-1251' => 'Windows-1251 ('.$this->app->gettext('cyrillic').')',
1546	'WINDOWS-1252' => 'Windows-1252 ('.$this->app->gettext('westerneuropean').')',
1547	'WINDOWS-1253' => 'Windows-1253 ('.$this->app->gettext('greek').')',
1548	'WINDOWS-1254' => 'Windows-1254 ('.$this->app->gettext('turkish').')',
1549	'WINDOWS-1255' => 'Windows-1255 ('.$this->app->gettext('hebrew').')',
1550	'WINDOWS-1256' => 'Windows-1256 ('.$this->app->gettext('arabic').')',
1551	'WINDOWS-1257' => 'Windows-1257 ('.$this->app->gettext('baltic').')',
1552	'WINDOWS-1258' => 'Windows-1258 ('.$this->app->gettext('vietnamese').')',
1553	'ISO-2022-JP' => 'ISO-2022-JP ('.$this->app->gettext('japanese').')',
1554	'ISO-2022-KR' => 'ISO-2022-KR ('.$this->app->gettext('korean').')',
1555	'ISO-2022-CN' => 'ISO-2022-CN ('.$this->app->gettext('chinese').')',
1556	'EUC-JP' => 'EUC-JP ('.$this->app->gettext('japanese').')',
1557	'EUC-KR' => 'EUC-KR ('.$this->app->gettext('korean').')',
1558	'EUC-CN' => 'EUC-CN ('.$this->app->gettext('chinese').')',
1559	'BIG5' => 'BIG5 ('.$this->app->gettext('chinese').')',
1560	'GB2312' => 'GB2312 ('.$this->app->gettext('chinese').')',
1561	);
1562
1563	if (!empty($_POST['_charset']))
1564	$set = $_POST['_charset'];
1565	else if (!empty($attrib['selected']))
1566	$set = $attrib['selected'];
1567	else
1568	$set = $this->get_charset();
1569
1570	$set = strtoupper($set);
1571	if (!isset($charsets[$set]))
1572	$charsets[$set] = $set;
1573
1574	$select = new html_select($field_attrib);
1575	$select->add(array_values($charsets), array_keys($charsets));
1576
1577	return $select->show($set);
1578	}
1579
1580	/**
1581	* Include content from config/about.<LANG>.html if available
1582	*/
1583	protected function about_content($attrib)
1584	{
1585	$content = '';
1586	$filenames = array(
1587	'about.' . $_SESSION['language'] . '.html',
1588	'about.' . substr($_SESSION['language'], 0, 2) . '.html',
1589	'about.html',
1590	);
1591	foreach ($filenames as $file) {
1592	$fn = RCMAIL_CONFIG_DIR . '/' . $file;
1593	if (is_readable($fn)) {
1594	$content = file_get_contents($fn);
1595	$content = $this->parse_conditions($content);
1596	$content = $this->parse_xml($content);
1597	break;
1598	}
1599	}
1600
1601	return $content;
1602	}
1603
1604	}

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